Dispersible anthraquinone dyestuffs

ABSTRACT

DIFFICULTLY WATER-SOLUBLE ANTHRAQUINONE DYESTUFFS, FREE FROM WATER-SOLUBILIZING GROUPS WHICH DISSOCIATE ACID IN WATER OF THE FORMULA WHERIN V1 REPRESENTS HYDROXYL OR -NH2, V2 REPRESENTS HYDROGEN, HYDROXYL, -NH2, LOWER AKYLAMINO, CYCLOHEXYLAMINO, PHENYLAMINO, PHENOXYPHENYLAMINO, PHENYLAZOPHENYLAMINO OR PHENYLAMINO RING-SUBSTITUTED BY CHLORINE LOWER ALKYL OR LOWER ALKOXY, X IS OXYGEN OR SULFUR, Y IS C1-C4-ALKYLENE OR   1-V1,2-(R-O-CO-O-Y-NH-SO2-C6H4-X-),3-W,4-V2-ANTHRAQUINONE   W IS HYDROGEN, CHLORINE OR X-PHENYLENE   -SO2-NH-Y-O-CO-O-R   AND R REPRESENTS AN OPTIONALLY SUBSTITUTED ALIPHATIC CYCLOALIPHATIC OR AROMATIC RADICAL; THESE DYESTUFFS BEING SUITED PARTICULARLY FOR THE DYEING OF SYNTHETIC ORGANIC FIBERS, ESPECIALLY POLYETHYLENE GLYCOL TEREPHTHALATE FIBERS, AFFORDING DYEINGS ON THESE FIBERS WHICH HAVE GOOD FASTNESS PROPERTIES AND ESPECIALLY GOOD FASTNESS TO LIGHT AND SUBLIMATION.

United States Patent (3 US. Cl. 260-372 4 Claims ABSTRACT OF THE DISCLOSURE Difiicultly water-soluble anthraquinone dyestuffs, free from water-solubilizing groups which dissociate acid in water of the formula W \K I wherein V represents hydroxyl or --NH V represents hydrogen, hydroxyl, NH lower alkylamino, cyclohexylamino, phenylamino, phenoxyphenylamino, phenylazophenylamino or phenylamino ring-substituted by chlorine, lower alkyl or lower alkoxy, X is oxygen or sulfur, Y is C -C -alkylene or CHQOHCH1 W is hydrogen, chlorine or X-phenylene -SO NH--YOCOOR and R represents an optionally substituted aliphatic, cycloaliphatic or aromatic radical; these dyestuffs being suited particularly for the dyeing of synthetic organic fibers, especially polyethylene glycol terephthalate fibers, affording dyeings on these fibers which have good fastness properties and especially good fastness to light and sublimation.

This application is a continuation-in-part of application Ser. No. 24,810 filed Apr. 1, 1970, now US. Pat. 3,689,510.

The present invention relates to sparingly water-soluble anthraquinone dyestuffs, usable as dispersion dyestuffs, to processes for their production, to the use of these anthraquinone dyestuffs for the dyeing or printing of synthetic organic textile fibres, especially textile fibres made from linear polyesters of aromatic polycarboxylic acid with polyfunctional alcohols, or made from cellulose esters and, the textile fibres dyed or printed with said dyestufis.

It has been found that difficultly water-soluble anthraquinone dyestuffs being free from water-solubilising groups dissociating acid in water and corresponding to the Formula I,

AYOCOOR (I) are characterised by particularly advantageous properties e.g. good aflinity on polyester fibres combined with good fastness to light and sublimation of the dyeings produced therewith.

In the above Formula I A represents the radical of an anthraquinone dyestuff which is linked with Y, in at least one fi position, either directly or by way of a bridging member,

Y represents an alkylene group, optionally substituted by a hydroxyl group, and

R represents an optionally substituted aliphatic, cycloaliphatic or aromatic radical.

The anthraquinone dyestuffs of Formula I are obtained by condensing an anthraquinone compound of the Formuwherein A and Y have the meaning given under Formula I, with a halogeno formic acid ester of the Formula III,

Hal-COOR (HI) wherein Hal represents chlorine or bromine and R has the meaning given under Formula I.

The starting materials are so chosen that the obtained anthraquinone dyestufi' contain no water-solubilising groups dissociating acid in water, i.e. it contains, e.g. no sulphonic acid groups, carboxylic acid groups or phosphoric acid groups.

The anthraquinone compounds, usable as starting materials and containing, in at least one fl-position, a hydroxyalkyl radical bound either directly or by way of a bridging member to the anthraquinone nucleus, can belong to the series of the actual anthraquinonyl compounds as well as to that of the higher condensed derivatives, e.g. to the group of the anthraquinonyl or anthrapyrimidinyl compounds.

The anthraquinone nucleus can contain, in addition to the substituentsY-OCOOR in fi-position, further substituents, e.g. primary amino groups or secondary amino groups which can be substituted by a lower alkyl group such as the methyl, isopropyl or sek. butyl group, a cycloalkyl group such as the cyclohexyl group, a monoor polynuclear aryl group, e.g. phenyl, chlorophenyl, methylphenyl such as the toluyl or 2,4,6-trimethylphenyl group, methoxyphenyl, phenoxyphenyl or phenylazophenyl group as well as hydroxy, cyano or nitro groups, or halogens such as fluorine, chlorine or bromine.

The anthraquinone radical A can be bound direct to Y or by way of a bivalent or trivalent bridging member. Biyalent bridging members can be double-bonding atoms such as oxygen or sulphur, or double-bonding groups. Suitable double-bonding groups are, e.g. those containing heteroatoms, e.g. a COO, CONH,

(O-alkylene) -O-, S-alkylene-O-, -O-alkylene-O-phenylene-, --phenylene-O-, O-phenylene, O-phenylene-O-, O-alkylene-O-phenylene-0-, S-phenylene-O-, NH-phenylene-, NH-phenylene-O- or COO-alkylene-O-, the SO;,, SO -O-,

S OzN- O- henyIene-SO- NH- or S-phenyIene-SO NH- group (whereby R denotes hydrogen or a lower alkyl radical, the alkylene group has at most 4 carbon atoms and the phenylene group may be substituted by halogen such as chlorine, or lower alkyl groups). Suitable as trivalent bridging member is, in particular, the o-dicarboxylic acid imide' group.

The alkylene group Y contains preferably at most 4 carbon atoms and can be straight-chained or branched; in the former case it is preferably the 1,2-ethylene or 1,3- propylene group, in the latter case it is the 2-methyl-1,3- propylene or 2,2-dimethyl-1,3-propylene group. If the alkylene group Y is substituted by a hydroxyl group, it represents especially a 2-hydroxy-l,3-propylene group.

If R represents an aliphatic radical, then it is, e.g. a straight or branch-chained, optionally substituted alkyl or alkenyl group (in the latter case especially a A2-alkenyl group) having preferably up to carbon atoms. As substituents, these aliphatic radicals, especially the alkyl group, can contain, e.g. halogens such as chlorine or bromine, or a lower alkoxy group as well as a carbocyclic ring having, in particular, aromatic character such as the phenyl radical, or heterocyclic ring such as the thienyl-(2)-, furyl-(2)- or tetrahydrofuryl-(D-radical.

Cycloaliphatic radicals denoted by R are, e.g. cycloalkyl groups having preferably 5- or 6-membered rings and especially the cyclohexyl or methylcyclohexyl group.

When R represents an aromatic radical, then this radical preferably belongs to the benzene series; it can contain usual non-ionogenic ring substituents. Such substituents are, e.g. halogens such as fluorine, chlorine or bromine, or lower alkyl groups, preferably chlorine or methyl groups.

Starting materials of the Formula II are for the most part known or they can be produced by methods known per se.

Anthraquinone compounds of the Formula II, in which the radical A is bound to Y by way of oxygen, sulphur, an -O-alkylene-O,

O-alkylene-cycloalkylenealkylene-O-group, can be obtained, e.g. using the process of the German Pat. 1,209,680 or of the British Pat. 974,404, e.g. by reacting an anthraquinone compound of the Formula IV,

wherein A represents a ,a-anthraquinonyl radical and W represents halogen, the sulphonic acid group or a phenoxy group,

with a compound of the Formula V,

wherein Y has the meaning given under Formula I and X represents oxygen or sulphur and Q represents the direct bond or a bivalent hydrocarbon radical option-ally interrupted by oxygen.

Examples of anthraquinone compounds of the Formula IV are: l-amino 2-bromoanthraquinone,l,4diamino-2- bromoanthraquinone, l-amino 4 hydroxy-2-bromoor -2-chloroanthraquinone, 1-an1ino-4-hydroxy 2 phenoxyanthraquinone, l-amino 4 hydroxyanthraquinone-Z- sulphonic acid, l-amino 4-phenylaminoanthraquinone- 2-sulphonic acid, l-amino 4 cyclohexylarninoanthraquinone-Z-sulphonic acid, l-amino 4-hydroxy-2-p-methoxyphenoxy-anthnaquinone. Examples of compounds of the Formula V are: glycols such as ethyleneglycol, 1,3- propyleneglycol, 2,2 diethylpropanediol (1,3), cyclohexanedimethanol, cyclohexanediethanol, cyclohexanedin-but-anol, 2,5 bisthydroxymethyl)-tetral1ydrofuran, 2,5- bis-(B-hydroxyethyl)-tetrahydrofuran, di- (5 hydroxyethoxy)-benzene, also mor p-(B-hydroxyethoxy)-phenol, B- (p-hydroxy-phenylethyl alcohol, m-hydroxybenzyl alcohol, mercaptoalkyl alcohols such as Z-mercaptoethanol, 3- mercapto-l-propanol or 4-mercapto-l-butanol.

Starting materials of the Formula II, in which Y is bound to A by way of a --SO NH or CONI-I-group or by way of a O phenylene-SO NH, -O-phenylene-CONH, S-phenylene-SO NH or S-phenylene- CONH-group, can be obtained by reacting a halide of the Formula VI,

4 wherein A represents a fi-anthraquinonyl radical, Q represents the direct bond or a phenylene group which is linked to A by way of oxygen or sulphur, X represents the -CO- or -SO -bond and Hal represents chlorine or bromine,

with an amine of the Formula VII,

NH -YOH I) wherein Y has the meaning given under Formula I.

Hali'des of the Formula VI are, e.g. lamin'oanthraquinone-Z-carbonyl chloride, 1 amino-4-p'henylaminoanthraquinone-Z-carbonyl chloride, l-amino 4 hydroxyanthraquinone-2-phenoxy 3'-carmonyl chloride, l-amino- 4-hydroxy-anthraquinone 2-phenoxy-4'-sulfonylch1oride or l-amino 4 hydroxy-anthranquinone-Z-phenylthio-4'- sulfonyl chloride, and amines of the Formula VII are, e.g. ethanolamine or 1,3-propanolamine.

The production of the anthraquinone compounds of the Formula II, wherein A represents a methyl group, which is bound to the an-thnaquinone nucleus A direct or by Way of a phenoxy group, is described, e.g. in the French Pat. No. 1,530,985.

Examples of such starting materials of the Formula II are: 1,4-diamino Z-hydroxymethyl-anthraquinone, 1,4- dihydroxy-Z-hydroxymethyl-anthraquinone, l amino-2- hydroxymethyl 4-phenylamino-anthraquinone and l-hydroxy-Z-hydroxymethyl-4-phenylamino-anthraquinone.

The halogeno formic acid esters of the Formula HI, usable as starting materials, are likewise for the most part known Such esters are: halogeno formic acid-alkyl, -alkenyl, -cycloalkyl or -aryl esters, e.g. chloroformic acid methyl ester, chloroformic acid ethyl ester, chloroformic acid, isopropyl ester, chloroformic acid arnyl ester, chloroformic acid allyl ester, chloroformic acid cyclohexyl ester, chloroformic acid-'wchloropropyl ester, chloroformic acid phenyl ester or chloroformic acid-2, 4-dirnethylphenyl ester, chloroformic acid-4-chlorophenyl ester, as well as the corresponding bromine derivatives.

The reaction of the anthraquinone compounds of the Formula II with the halogeno formic esters of Formula. III is preferably performed at low temperature (4-50 C.) in the presence of acid-binding agents and, optionally, in inert organic solvents.

Suitable acid-binding agents are, in particular, tertiary nitrogen bases such as pyridine, picoline, quinoline, lepidine, aliphatic amines such as trimethylamine and triethylamine, anilines such as N,Ndimethylaniline and N,N- diethylaniline, also alkali metal or alkaline-earth metal carbonate, hydrogen carbonates or hydroxides such as sodium hydrogen carbonate, potassium carbonate, barium carbonate, sodium hydroxide or barium hydroxide. Suitable inert organic solvents are optionally halogenated or nitrated aromatic hydrocarbons such as toluene, xylenes, chlorobenzene, dichlorobenzene or nitrobenzene as well as aliphatic halogenated hydrocarbons such as chloroform, carbon tetrachloride or tetrachloroethane, also lower aliphatic ketones such as acetone and cyclic ethers such as dioxane or tetrahydrofuran.

Preferred anthraquinone dyestuffs of the Formula I, which are characterised by a good afiinity, by good levelling and building up properties as well as by good fastness to sublimation and light on polyethylene glycol terephthalate fibres, correspond to the Fomula VIII,

wherein V represents the hydroxyl or amino group,

V represents the hydroxyl group or a phenylamino group, optionally ring-substituted by halogen such as chlorine, lower alkyl or lower alkoxy group,

X represents oxygen, sulphur, the -CONH- or 4O NH-group or also an Oalkylenegroup Y represents a lower alkylene group and R" represents a lower alkyl group or a phenyl radical, optionally substituted by halogen, such as chlorine, or a lower alkyl group such as a methyl group.

Further anthraquinone dyestufis, according to the invention, which likewise are characterised by a good afiinity and levelling property, as well as by good fastness to light of the polyester dyeings produced therewith, are

V V Y and R" have the meaning given under Formula VIII and R represents a lower alkyl group or preferably hydrogen.

In this specification, including the claims, the term lower applied to alkyl, alkylene and alkoxy groups or moieties means that such groups or moieties have at most 5 carbon atoms.

Anthraquinone dyestufis of Formula I, wherein the ROOCOY- grouping is linked to the anthraquinone nucleus by way of a -NH-phenylene-, --NH-phenylene-O or --NH-phenylene-S-group may also be produced by condensing a ,B-halogeno-anthraquinone compound of Formula XI,

A"-Hal (XI) wherein A" represents a ,B-anthraquinonyl radical which contains a hydroxyl group in the adjacent a-position, and

Hal represents chlorine or bromine, with an amino compound of Formula XII,

wherein arylene represents a benzene nucleus, optionally substituted by halogen such as chlorine, or by lower alkyl groups,

Q represents the direct bond, oxygen or sulphur and Y and R have the meaning given under Formula I,

whereby the starting materials are so chosen that the final dyestuff contains no-water-solubilising groups dissociating acid in water.

fl-Halogeno-anthraquinone compounds of Formula XI, usable according to the invention, are for the most part known. Examples of these are: 1-hydroxy-2-bromo-anthraquinone, 1,4 dihydroxy-2-bromo-anthraquinone and 1,4-dihydroxy-Z-chloro-anthraquinone.

Amines of the Formula XII to be reacted with the latter compounds of the Formula XI can be produced in a known manner e.g. by reacting a nitro compound of the Formula XIII,

wherein arylene, Q" and Y have the meaning given above, with a halogeno formic acid ester of the Formula III given above, whereby the condensation is performed as described in the foregoing, and then reducing the nitro group to the amino group.

Furthermore, anthraquinone dyestuffs falling under Formula I and corresponding to the Formula XIV,

Y H NH-R whet 6111 R represents hydrogen or a lower alkyl group,

n represents 1 or 2, and

R and Y have the meaning given under Formula I and wherein the benzene ring B may be further substituted by halogen or lower alkyl groups, may be produced by condensing a disulfonated anthraquinone compound of Formula XV RNlli 0 011 A s 05H H o I IH-R1 (XV) with a compound of Formula XVI 0-Y n-o-o0 0 R (XVI) to a monosulfonated anthraquinone compound of For mula XVII and then splitting ofl? the sulphonic acid group of this latter compound with a reducing agent, whereby the starting materials are so chosen that the final dyestuff contains no water-solubilising groups dissociating acid in water.

A further process for the production of anthraquinone dyestufis of the Formula XIV comprises oxidizing an anthraquinone compound of Formula XVIII,

wherein R represents hydrogen or a lower alkyl group, to the corresponding quinonimino compound, for example with manganese dioxide and then reacting the latter with a compound of the Formula XVI given above, whereby the starting materials are so chosen that the final dyestuif contains no water-solubilising groups dissociating acid in water.

The new anthraquinone dyestuffs of the Formula I are yellow to deeply coloured, crystalline, diflicultly watersoluble substances. They can be obtained analytically pure by recrystallisation from organic solvents, but such purification is generally not necessary for their use in dyeing.

They are suitable for the dyeing or printing of synthetic organic fibres, e.g. for the dyeing of textile fibres made from linear, high-molecular esters of aromatic polycarboxylic acids with polyfunctional alcohols such as polyethylene glycol terephthalate or poly-(l,4cyclohexanedimethylol-terephthalate) as wel1 as for the dyeing of textile fibres made from cellulose-2-, -2 /2-acetate or cellulose triacetate. These dyestutfs can, however, also be used for the dyeing of synthetic polyamide fibres such as polyhexamethylene adipamide, polycaprolactam or polyaminoundecanoic acid, as well as for the dyeing of polyolefins, especially polypropylene fibres, and also for the dyeing of polyamide in the mass.

Furthermore, they are suitable, depending on the composition, for the dyeing of lacquers, oils and waxes, as well as for the dyeing of cellulose derivatives, particularly cellulose esters such as cellulose acetate, in the mass.

Preferably, the dyeing of the mentioned fibre materials with the difiicultly water-soluble anthraquinone dyestufis, according to the invention, is carried out from aqueous dispersion. It is therefore advantageous to finely divide the final materials of the Formula I, usable as dispersion dyestufis, by grinding them with dispersion agents and possibly with further grinding auxiliaries.

Anionic dispersing agents suitable for the purpose are, e.g. the alkylaryl sulphonates, the condensation products of formaldehyde with naphthalene sulphonic acid, the lignin sulphonates; suitable non-ionogenic dispersing agents are, e.g. the fatty alcohol or alkylphenyl-polyglycol ethers with higher alkyl radical.

The dyeing of the polyester fibres with the ditficulty water-soluble dyestutfs, according to the invention, from aqueous dispersions, is carried out by the usual processes for polyester materials. Polyesters of aromatic polycarboxylic acids with polyvalent alcohols are preferably dyed at temperatures of above 100 C. under pressure. But the dyeing can also be performed at the boiling point of the dye bath in the presence of dye carriers, e.g. phenylphenols, polychlorobenzene compounds or similar auxiliaries, or by using the Thermosol process, i.e. pad-dyeing with a subsequent treatment in the heat, e.g. thermofixing at 180-210" C. Cellulose-2V2-acetate fibers are preferably dyed at temperatures of 8085 C., whereas cellulose triacetate fibres, as well as synthetic polyamide fibre material, are advantageously dyed at the boiling point of the dye bath. The use of dye carriers is not necessary in the dyeing of cellulose-2 /z-acetate or polyamide fibres. Anthraquinone dyestuffs, according to the invention, can also be used for the printing of the stated materials using normal methods.

The anthraquinone dyestufii's of the Formula I, usable as dispersion dyestufis, draw on to the previously mentioned synthetic organic fibre material, especially on to polyethylene glycol terephthalate textile fibres, very well and they produce thereon strong yellow, orange, red,

violet, blue and green dyeings which have very good fastness to light, washing, rubbing, perspiration, sublimation, solvents and decatising. In this respect, mixtures of anthraquinone dyestuffs according to the invention behave particularly favourably.

Furthermore, anthraquinone dyestuffs, according to the invention, can also very well be used in admixture with other dispersion dyestuffs, which are fast to sublimation, for the dyeing of textile material using the pad-dyeing/ thermofixing process. Particularly worthy of note is the fact that dyestuffs of the Formula I produce, in the dyeing of closely woven polyester fabrics or firmly twisted polyester yarns, even dyeings right through.

Moreover, the dyestutfs of the Formula I possess the valuable property of being able to produce on textured polyester fibres, e.g. Crimplene, very deep and nonstreaky dyeings which also have good fastness properties, particularly fastness to light and sublimation. The new anthraquinone dyestuffs also have good stability in the dye liquor and to boiling.

The following examples illustrate the invention. The temperatures are given in degrees centigrade.

29.9 g. of l-amino-Z-fi-hydroxyethoxy-4-hydroxy-anthraquinone are dissolved at 50 in 300 g. of pyridine and to the deep red solution are added dropwise, after rapid cooling of the solution to 0l0 and while the latter is being vigorously stirred, 31 g. of chloroformic acid phenyl ester. The reaction is complete after one hour at this temperature. The reaction product of the formula 0 z A oomornooooQ precipitates, on stirring the solution with 300 g. of methanol at 20, in a crystalline form; it is filtered off, washed with methanol and dried.

Fibres made from cellulose di and triacetate, as well as from polyethylene terephthalate, are dyed in the aqueous dispersion of this finely divided dyestufl' in very pure and even red shades. The dyeings have very good fastness to light, sublimation and rubbing.

If, instead of the 29.9 g. of 1-amino-2-B-hydroxyethoxy-4-hydroxyanthraquinone, equivalent amounts of an anthraquinone compound listed in the following Table 1, Column II, are used, and instead of the 31 g. of chloroformic acid phenyl ester, equivalent amounts of a halogen formic acid ester given in Column III of the same table, using otherwise the same procedure as described in the example, then dyestuffs are obtained which dye polyethylene glycol terephthalate fibres in the shades listed in column IV of this table, these shades likewise having fastness to light and to sublimation.

TABLE 1 Shade on polyethylene gllygolterepha a Number Anthraquinone compound Halogen formic acid ester fibres e 2 NH: Red.

on. (moo-@011;

l OCHzCH-CHaO C TABLE 1C0ntinued Shade on polyethylene glycol terephthalate Number Anthraquinone compound Halogen formic acid ester fibres 3 (HI El) (311 CICOOOHZCCI; Orange.

0 0111c 11,0 0 Y OH O 4....- E) IIIOQ 01000011 01 Red.

A c om-Qc 11103 1 l O OH 5 El) IITH: CICOOCH; Red.

0 C H3O H: O H

II I O O H 6 O NH; ClCOOCHz-CH=CH2 Red.

u 1 H I- 0 CH 0 CHzOH O OH 7 O NH: Red.

II 1 (311; 01-6 0 O CH:

O CHz?C H1O H H l O OH 8 E (|)H Same as above- Orange- 9 I NH: /CH; Red.

/\ 01C 0 O C H oomcmo CHzCHzOH CH3 \H/ 10 fl NH: ClCOOCgH; Red.

/\ 0 cmomon 11 Same as above ClCOOChH Red.

12 do CICOOC|H1 Red.

1'; do C1000 05H Red.

14 do Red.

H 0100 O CHzGHzB! Red.

TABLE 1--C0ntinued Shade on polyethylene glycol terephthalate Number Anthmquinone compound Halogen formic acid ester fibres 16 NH: ClOOOCHQCHS Red.

AOOCHzCHaOQOCHzCHnOH Y 17 (6 NH; CICOOGE: Blue:

A s-cmcmon SCH2CH2OE ll 0 NH:

18 a NH: 01C 0 O C3H7 Ruby red.

A s CHaC-HzCHzOH II 0 H 19 O NH: Red.

II I 010 0 o- O CHxCHgCHqO CHiCHQCHgOH I O OH 20 Same asabove ClCOOCzHa Red.

21 O NH: Red.

ll I C10 00- oomcm-s-cmcmon I I O OH 22 Same as above C10 0 O 61H Red.

23 (I? ILQ'H: C1COOC2H5 Red;

/\ ocmcamcmcmon 24 Same as above Red.

CICO O 25 I? IYIH; Same as above Red.

A (OCHzCHzhCH II I O OH 26 Same as above 01C 0 O CaHb Red.

(R 11TH: ClCOOCzH; Red A (OCHaCHa)4OH I O OH 28 Same asabcve Red.

TABLE 1Contlnued Shade on polyethylene glycol terephthalate Number Anthraquinone compound Halogen formic acid ester fibres 29 (N) 11TH: ClCOOCaHs Red.

0 CHzCHzCJHOH II I O OH 30 Il Hz 0100003115 Ruby red.

/\ SCHaCHgOCHzCHgOH II I O OH Example 32 isopropyl ester. Stirring afterwards proceeds for a further 40.6. g. of 1,5-dihydroxy-4,8-diamino-2-(4'-,6-hydroxyethoxy)-phenylanthraquinone are homogeneously mixed by stirring in 400 g. of N,N-dimethylaniline and to the mixture are added at 5-10, 16.3 g. of chloroformic acid ethyl ester within half an hour. After a further hour at this temperature, the reaction mixture is diluted with 200 g. of ethanol, whereupon the dyestuff of the formula ITTHjK (3H OCHzCHzOCO O C2115 Example 33 7 g. of potassium carbonate and 34.5 g. of 1-amino-4- hydroxy 2 1 w-dihydroxypropylmercaptoanthraquinone are homogeneously mixed by stirring in 380 g. of chlorobenzene and to the mixture are added, at 0l0 and in the course of 45 minutes, 24.5 g. of chloroformic acid 2 hours at the same temperature and to the reaction mixture are finally added 100 g. of petroleum ether. The reaction product of the formula precipitates as black-violet powder. -It is filtered off, washed with petroleum ether and with water and dried.

The aqueous dispersion of the finely divided dyestufi dyes cellulose diand triacetate fibres as well as, in particular, polyethylene glycol terephthalate fibres, in full, even, blueish-red shades. The dyeings have good fastness to light, rubbing and wet processing.

The same dyestuff is obtained by using in the above example, instead of the 24.5 g. of chloroformic acid isopropyl ester, 33.4 g. of bromoformic acid isopropyl ester, using otherwise the same procedure as prescribed above.

If, instead of the 34.5 g. of l-amino-4hydroxy-2- 5, dihydroxypropylmercaptoanthraquinone, equivalent amounts of an anthraquinone compound listed in the following Table 2, Column II, are used, and instead of the 24.5 g. of chloroformic acid isopropyl ester, equivalent amounts of a halogen formic acid ester given in Column III of the same table, using otherwise the same procedure as described in the example, then dyestuffs are obtained which dye polyethylene glycol terephthalate fibres in the shades listed in Column IV of this table, these shades likewise having fastness to light and to sublimation.

TABLE 2 Shade on polyethylene glycol tere- Halogen iornn'c phthalate Number Anthraquinone compound acid ester fibres 33 (H) IIIHQ /CH3 Bluish red.

/\ 01C 0 O C H S-CHzCH2-OH 0 H I 34 Same as above Do.

C10 0 0 CH3 Do. GlCOOCH CH; Do. 010 000411 Do.

TABLE 2Coutinued Shade on polyethylene glycol tereph- Halogen formic thalate Number Anthraquinone compound acid ester fibres 38 do Do.

I CH

9 !N11: C1COOC2H5 D0.

SCHCECH2OH l 0 OH 40 Same as above .3 DO.

(ll-COO Example 41 Example 42 To a mixture of 350 g. of chlorobenzene and 80 g. of triethylamine are added 35.1 g. of 1,4-diaminoanthraquinone 2,3 dicarboxylic acid B hydroxyethylimide and homogeneously mixed by stirring at The suspension is cooled to 010 and 19 g. of chloroformic acid methyl ester are added dropwise in the course of half an hour. To complete the reaction, stirring is carried out for a further hour at this temperature. 200 g. of methanol are then added, whereupon the corresponding dyestufi of the formula N-CHzCHzOOOO OH:

precipitates in a finely divided form from the reaction mixture. The dyestufi is filtered 01f, washed with methanol and dried.

Fabrics made from polyethylene glycol terephthalate fibres are dyed from the aqueous dispersion of the finely divided dyestufi in very pure, even, turquoise blue shades. The dyeings have good fastness to light and to rubbing.

If, in the above example, instead of 19 g. of chloroformic acid methylester, 26.3 g. of chloroformic acid n-butylester or 21.7 g. of chloroformic acid ethylester are used, then two further dyestuffs are obtained which produce turquoise blue dyeings on polyethylene glycol terephthalate fibres. A very similar dyestuff is also obtained by using instead of the 35.1 g. of 1,4-diaminoanthraquinone- 2,3-dicarboxylic acid fi-hydroxyethylimide, 36.5 g. of 1,4- diamino anthraquinone-Z,B-dicarboxylic acid-' -hydroxypropylimide, and otherwise acylating as in the above example. A somewhat less greenish blue dyestufl is obtained by replacing, in the above example, the 35.1 g. of 1,4 diamino anthraquinone-Z,3-dicarboxylie acid-B-hydroxyethylimide by 35 g. of l-amino-Z-fi-hydroxyethyl-3- 0x04,7-diamino-S,6-phtl1aloyl-dihydroisoindole, proceeding otherwise according to the above example.

34.4 g. of 1-amino2-hydromethyl-4-phenylamino-anthraquinone are dissolved, whilst heat is being applied, in 300 g. of pyridine. The deep blue solution is cooled to 05 and to this are added dropwise at this temperature, whilst the solution is being well stirred, 28 g. of chloroformic acid amyl ester. After the dropwise addition is completed, the reaction mixture is stirred for a further 3 hours at 0-10" to complete the acylation. To effect precipitation of the dyestuif of the formula 200 g. of methanol are then added to the reaction mixture. The dyestuif is separated by filtration, washed with methanol and dried.

The finely divided dyestufi evenly dyes fibres made from cellulose diand triacetate, as Well as polyethylene glycol terephthalate fibres, in aqueous dispersion, in deep blue shades having good fastness to light and to sublimation.

By using, instead of the 34.4 g. of l-amino-Z-hydroxymethyl-4-phenylaminoanthraquinone, equivalent amounts of an anthraquinone compound given in the following Table 3, Column II, and instead of the 28 g. of chloroformic acid-n-amyl ester, equivalent amounts of a halogen formic acid ester given in Column 111 of the same table, with otherwise the same procedure as stated in the example, dyestuffs are obtained which dye polyethylene glycol terephthalate fibres in the shades listed in Column IV of this table, these shades likewise having fastness to light and sublimation.

TABLE 3 Shade on polyethylene glycol ter- 1 hthalate Number Anthraquinone compound Halogen formic acid ester fi res 43 0 NH; Red.

II 010 0 0- CH;

Y (an 0 NH, CH; Reddlsh 44 blue.

01C 0 0 CH CHzOH CHQCI CH:

45 0 NH CICOOCHaCHzCHzCl Red.

0 7 4e NH: 010 b ocmomB Red o-Qcmon Y 2m 47 (I) NHa 13x0 0 0 0 H; Blue:

A cmon 48 0 OH Violet.

CHzOH ll 0 Q 49..-- Same m above C1C00n-C ;Hn Do. 50 0 lIIH; ClCOOCH; Blue;

Q QCHQOH 51 Same as above (ii-000C211; Do. 52 do CICOOCHKII) Do.

53 fin Do.

54 0 Cl-COO-CH; Red-vlole t:

19 Example 55 39 g. of l-amino-2-fl-hydroxyethylmercapto-4-anilinoanthraquinone are roughly dissolved at 20-25 in 400 g. of pyridine and to this solution are added dropwise, dur- 20 precipitates, upon the addition of 400 g. of methanol, in crystalline form; the dyestufi is filtered 01f, washed with methanol and dried.

The finely divided dyestufi very evenly dyes, in aqueous o dispersion fabrics made from polyethylene glycol terephmg 15 minutes at 5-10 16.3 g. of chloroformie acid 5 y ethyl ester. The acylation is completed after a further half igggi ggg g 3:5 s x fisgg very good fast an hour at this temperature. The dyestufi of the formula By using instead of 39 g. of dmxyeflv 0 ylmercapto-4-anilinoanthraquinone, equivalent amounts 10 of an anthraquinone compound given in the following somomocoocm, Table 4, Column II, and instead of 16.3 g. of chloroformic acid ethyl ester, halogen formic acid ester, using otherwise the same procedure as described in the exam- Y ple, dyestuffs are obtained which dye polyethylene glycol ism-Q 15 terephthalate fibres in the shades listed in Column IV of this table.

TABLE 4 Shade on polyethylene glyeol terephthalate No. Anthraqulnone compound Halogen formic acid ester fibres 58 (I) NH: GlCOOOHzCHCl: Blue.

A SCHaCHaOC CH: 0 NHQM.

fifimnzczzzr: O NHg ClCOOCaHs D0;

OH CHst'JHCHaOH 58 I: 9 N H; Cl-GOO CzHaCl Violet- OCHaCHzOH O NH OH:

9.....:'.::'..::: (1) NH: ClCOOCsHn Violet-blue.-

OCHaCHaOH NEG-OCH:

.22.": NH Bl I l on cicoo SOHfl'JHCHaOH NHG CH: -53-132: I0 1;!3: Cl-GOO-GaHa Do;

A S-CHaCHaOH 4-sulphonic acid-fl-hydroxyethylamide are homogeneously mixed by stirring in 350 m1. of pyridine and to the mixture are added dropwise at 0-10", within half an hour, 33 g. of chloroformic acid-p-bromoethyl ester and the mixture is maintained at this temperature for a fur- TABLE 4Continued Shade on polyethylene glycol terephthalate N o. Anthraquinone compound Halogen formic acid ester fibres 62 NH, C1-G0 0-0111, Violet-blue.

O-CHaCHaOH 63..- E) 11TH: CICOOCH; Blue;

@ gscmcmon 64 Same as above ClCOOCzHs Do. 65 do ClCOOC4H(n) D0.

66 0 NH, Do.

it 0 @somcucmorr l A Q e7 0 NH, Do.

s G memoir 68 0 NH; 0100005, Do.

s CHICHCHiOH 69 f) NH: 01-0 0 O-GzHs Do.

OCHaOHzOH l NH 70..-.: NH: 01-0 0 O-UnHs Violet-blue a A o-omcmou Example 71 ther 2 hours. 300 ml. of ethyl alcohol are added to the deep red solution and the reaction product of the formula 45.4 g. of 1-amino-4-hydroxyanthraquinone-Z-phenoxy- 0 o-Q-somncmomocoommm 23 gradually precipitates in a fine-crystalline form. The reaction product is filtered otf, washed on the filter with ethyl alcohol and afterwards dried.

The finely divided dyestutf dyes polyethylene glycol terephthalate fibres, in aqueous dispersion, in brilliant red shades having very good fastness to light, sublimation and rubbing.

By using, instead of the 45.4 g. of 1-amino-4-hydroxyanthraquinone-2-phenoxy-4'-sulphonic acid-B-hydroxyethpound given in the following Table 5, Column II, and instead of the 33 g. of chloroformic acid-fi-bromoethyl ester, equivalent amounts of a halogen formic acid ester, given in Column III of the same table, with otherwise the same procedure as described in the example, dyestufis are obtained which dye polyethylene glycol terephthalate fibres in the shades listed in Column IV of this table, these shades likewise having fastness to light and subylamide, equivalent amounts of an anthraquinone com- 10 limation.

TABLE 5 Shade on polyethylene glycol ter- Halogen formic ephthalate Number Anthraqulnone compound acid ester fibres 72 O IYIH: CICOOCHa Red violet.

@mQ-somnomomon ll H (73)..-.2313: 0 NH: C1COOC:H4BI Do.

" OQSO NHCHzCHaOH Y O-Q-SJzNHCHzCHzOH Tin-2:33:15: (I) IIIH: Cl-GOOCQOI; D0.

oQso-mnornomomon 75.. :r.':.; $1) 17TH: ClCOOUQ B Ruby red.

SQsmNHomoH-CHrOH 76 0I 11TH; CLCOOCgHs Do,

A s @somnom-omcmon 77..-:::::;;::: O NH; 1 0 0 2 5 Red;

QwmQ-S OQNHCHIGHZOH .Z'ITJIIIIZ. S b DO. 78 arm as a eve 0100 Q 7Q (in --r Q A 0100004119 Orange.

80 0 NH: 0100002115 Ruby red.

w s Q-somn CHzCHzOH 39.1 g. of 1-amino-4hydroxy-2-(4'-;3-hydroxyethoxyphenoxy)-anthraquinone are sprinkled into 350 ml. of pyridine at 35-40 whilst the mixture is being vigorously stirred. The mixture is cooled to -15 and to it are added, in small portions, 43.3 g. of chloroformic acid tribromoethyl ester. Stirring is maintained at this temperature until the starting material can no longer be detected by thin-layer chromatography.

With the addition of 350 ml. of methanol, the formed dyestuif of the formula l @fio-Q-o crnon o o o ocrncBr;

precipitates in the form of fine dark-red crystals from the reaction mixture. The dyestuff is filtered off, washed with methanol and water and dried.

The finely divided dyestuif dyes polyethylene terephthalate fibres, from aqueous dispersion, in even blueishred shades having excellent fastness to light, sublimation and rubbing.

If, in the above example, instead of 39.1 g. of l-amino- 4-hydroxy 2 (4' p hydroxyethoxy-phenoxy)-anthraquinone 40.7 g. of 1-amino-4-hydroxy-2-(4'-fi-hydroxyethoxy-phenylthio-anthraquinone and the same procedure as prescribed above are used, then a little more blueish red dyestutf having the same good dyeing properties is obtained.

Example 82 To a solution of 31.2 g. of l-aminoanthraquinone-2- carboxylic acid-'y-hydroxypropylamide in 300 ml. of

pyridine are added in small portions at 0-10, whilst the solution is being vigorously stirred, 46.6 g. of chloro-. formic acid-p-methylphenyl ester within one hour. To complete the reaction, the reaction mixture is held at this temperature for a further two hours. By the slow dropwise addition of ml. of water, the dyestuff of the formula is precipitated as fine red powder. The dyestufi is filtered 01f, washed with water until the reaction is neutral and with a little methanol, and then dried.

From aqueous dispersion, the finely divided dyestuif dyes fibres made from cellulose diand triacetate, as well as, in particular, fibres made from polyethylene terephthalate, in very even red shades having good fastness to light and to rubbing.

By using, instead of the 31.2 g. of l-aminoanthraquinone-Z-carboxylic acidrhydroxypropylamide, equivalent amounts of an anthraquinone compound given in the following Table 6, Column II, and instead of the 46.6 g. of chloroformic acid-p-methoxyphenyl ester, equivalent amounts of a halogen formic acid ester given in Column III of the same table, with otherwise the same procedure as given in the example, dyestuffs are obtained which dye polyethylene glycol terephthalate fibres in the shades listed in Column IV of this table, these shades likewise having fastness to light and to sublimation.

o ounornornomo o o o-Qen,

TABLE 6 Shade on polyethylene glycol terephthalate Number Anthraqulnoue compound Halogen formic acid ester fibres 83 O NHI Red.

C ONHCH2CH2CH2OH 84 (6 NH: CH: Blue:

010 O O C E CONHCHzCHzOH 85 (I) NH: 010000413901) D0.

S OzNHCHzCHzOH O NH NH: @fioonncmomon O OH Blueish red Br-C O 0 TABLE 6-C0ntinued Shade on polyethylene glycol ter ephthalate Number Anthraquinoue compound Halogen formic acid ester fibres 96 IIIH; 01C 0 0411 Blue.

A o 0 oomongon O NH Example 97 Example 98 42.3 g. of 1-hydroxy-2-fi-hydroxyethylsulphonyl-4-phenyl-aminoanthraquinone are homogeneously mixed by stirring at room temperature in 350 ml. of pyridine. After slight cooling of this mixture to l5, 34 g. of chloroformic acid butyl ester are added to it drOpWise within 30 minutes. The mixture is maintained at this temperature until the starting material is no longer detectable. The dyestufi of the formula 1 A sorcmcmoooomm is precipitated, by the addition of 300 ml. of methanol, in a fine-crystalline form from the reaction mixture. The dyestufi is then filtered off, washed on the filter with methanol and dried.

With the finely divided dyestutf are obtained on polyethylene terephthalate fibres, from aqueous dispersion, even, deep, reddish blue shades having very good fastness to light and to sublimation.

A reddish blue dyestufi? possessing similar properties is obtained by using, instead of 34 g. of chloroformic butyl ester, 19 g. of chloroformic acid methyl ester; a greenish blue dyestuff having similar good fastness properties is ob,- tained by using, instead of the 42.3 g. of l-hydroxy-2-B- hydroxyethylsulphonyl-4-phenylaminoanthraquinone, 42.2 g. of l amino-2-fi-hydroxyethylsulphonyl-4-phenylaminoanthraquinone, proceeding otherwise according to the above example.

31.9 g. of l,4-dihydroxy-2-bromoanthraquinone and 56 g. of 4'-(fl-ethoxycarbonyloxy-ethoxy)-ani1ine are stirred up in 350 g. of boiling ethylene glycol monomethyl ether for 15 hours; to the deep violet-red reaction solution are added, at 100, ml. of water and the solution is cooled to room temperature. Ihe precipitated crystalline dyestuff of the formula is then filtered ofi, Washed with methanol and dried.

From an aqueous dispersion, the finely-divided dyestuif dyes fabric, made from polyethylene terephthalate fibres, in even red-violet shades having excellent fastness to light and to sublimation.

By using, instead of the 31.9 g. of 1,4-dihydroxy-2- bromo-anthraquinone, equivalent amounts of an anthraquinone compound, given in the following Table 7, Column II, and instead of the 56 g. of 4'-( 8-ethoxy-carbonyloxy-ethoxy)-aniline, equivalent amounts of an aniline derivative given in Column II of the same table, with otherwise the same procedure as described in the example, dyestuffs are obtained which dye polyethylene glycol terephthalate fibres in the shades listed in Column IV of this table, these shades likewise having fastness to light and to sublimation.

TABLE 7 Shade on polyethylene Number Anthraquinone compound Formic acid ester i bres a e 99 0 OH Red.

H NH2 OCH2CH2OCOOCH; 0 B.

100 Same as above Red.

NH CH2CHOCOOC:H

101 -do 11 Red.

NHr-O CHaCHCHzC o 0 02H.

102 do Red.

Nm-Q-Q orncrn-o-o 0 o-Q-m 103 .do Red.

NH-O cinema-o 0 004m TABLE 7-Co ntlnued Shade on polyethylene glycol terephthalate Number Anthraquinona compound Formic acid ester fibres 104, .do Bed.

NH (OCHBCHzhOOOOCnHs 105 ....do Red.

H1O C O 0 C4H9 1060.1"; --d0 Red.

urn-Q-omomomo o 0 0 cm Example 107 30.4 g. of l(N),9-(2'-methyl)-pyridino-2-;8-hydroxyethylaminoanthraquinone are homogeneously mixed in 300 g. of 3-picoline at 0-5 and at the same temperature are then added dropwise, within one hour, 31 g. of chloroforrnic acid phenyl ester. After 4 hours, the reaction product of the formula I NHCHzCl-Iz-O-C 0 0G is precipitated from the mixture by the addition of 450 g. of methanol. It is filtered off, washed with methanol and dried.

From its finely divided aqueous dispersion, this dyestufr' dyes polyethylene terephthalate fibres in intensely yellow shades having fastness to sublimation.

Very deeply coloured, pure yellow dyestuffs, having very good fastness to sublimation, are obtained on polyethylene terephthalate fibres by replacing, in the above example, the 30.4 g. of 1(N),9-(2'-rnethyl)-pyridino-2- fl-hydroxyethylaminoanthraquinone by 32.3 g. of 1(N),9- pyrimidine-2B hydroxyethylthio-4-aminoanthraquinone and acylating by using either the same amount of chloroformic acid phenyl ester or by using 21.7 g. of chloroformic acid ethyl ester, under otherwise the same conditions.

Example 108 To a solution of 800 g. of 96% sulphuric acid and 22 g. of o-boric acid are added, at 40-50 and within /2 hour, 48 g. of 1,5-dihydroxy-4,8-diaminoanthraquinone- 3,6-disulphonic acid. The solution is cooled to and to it are then added 38 g. of ,G-monophenoxy-diethyl carbonate. Stirring is maintained for half an hour at 10 and the temperature then allowed to rise within half an hour to room temperature. After this period of time, the reaction mixture is poured on to two litres of ice/methanol (3 0% methanol) and then heated for 4 hours to 60.

The product of the formula NH, 0 on A @ocmcmoooo 01115 n oas H Y NH:

is filtered ofi, washed with 5% brine and dried.

33 g. of the dried product are suspended in 400 ml. of 50% methanol, to the suspension are added 40 ml. of concentrated ammonia and to the whole are added dropwise 18 g. of sodium hyposulphite in 60 ml. water, the mixture being then heated for one hour to 40-50".

The dyestufi of the formula I l A, -OCH1CH2OCOOC2H5 H NH:

precipitates out, is washed first with cold water, then with hot water and finally with hot methanol, and dried. The dyestuff is identical to that obtained according to Example 31.

Example 109 NH: OH

OCH;CH;0 COO CaHs Y H O NH:

precipitates out in crystalline form as the solution is stirred with ice. The reaction product is filtered off, washed neutral with water, subsequently treated with methanol and dried.

This dyestutf is identical to that stated under Example 31.

If, instead of the 28.6 g. of 1,5-dihydroxy-4,8-diaminoanthraquinone equivalent amounts of the anthraquiuone compound given in the following Table 8, Column II, are used, or if the 30.5 g. of fi-monophenoxydiethyl carbonate are replaced with equivalent amounts of the phenoxy compound given in Column III of the same table, with otherwise the same procedure as described in the Example 109, then dyestufis are obtained which dye polyethylene glycol terephthalate fibres in shades having similar properties, these shades being listed in Column IV of the same table.

3 Example 129 28.6 g. of 1,5-dihydroxy 4,8 diaminoanthraquinone are introduced in small portions within half an hour at 25 into 270 ml. of 96% sulphuric acid, whereupon the yellowish-brown solution is cooled to and, within a further half hour, oxidised with 18 g. of manganese dioxide to quinonimine. The obtained deep blue solution is clarified through a glass frit and to the solution are added, at to -5, 31 g. of fi-(p-methylphenoxy)- ethylmethyl carbonate. At this temperature the reaction is completed after one hour, the formed reaction product of the formula O H CH cu cmo C 0 0 OH;

H 1 in,

precipitates, on being poured on to ice water, in crystalline form. It is filtered ofi, washed with water until the reaction is neutral and dried.

From its finely divided aqueous dispersion, this dyestuif dyes polyethylene terephthalate fibres in pure blue shades having very good fastness to light, sublimation and wet processings.

If, in the above example, the 18 g. of manganese dioxide are replaced by 11 g. of concentrated nitric acid, the procedure being otherwise as described above, the same blue dyestufi" is obtained.

Example 1 3 0 In a pressure dyeing apparatus, 2 g. of the dyestuff, obtained according to Example 31, are finely suspended in 2000 g. of water containing 4 g. of oleylpolyglycol ether. The pH-value of the dye bath is adjusted with acetic acid to 4-5.

100 g. of fabric made from polyethylene glycol terephthalate are then introduced at 50, the dye bath is heated within 30 minutes to 140 and dyeing is carried out at this temperature for 50 minutes. The dyeing is afterwards rinsed with water, soaped and dried. Under these conditions is obtained a deeply coloured, level, blue dyeing having fastness to perspiration, light and sublimation.

The dyestutf described in the other examples produce, using this process, dyeings of equal quality.

Example 13 1 Polyethylene glycol terephthalate fabric is impregnated on a padding machine at 40 with a dye liquor of the following composition:

g. of the dyestulf, obtained according to Example 32,

finely dispersed in 7.5 g. of sodium alginate,

20 g. of triethanolamine,

20 g. of octylphenolpolyglycol ether and 900 g. of water.

The fabric, squeezed out to ca. 100%, is dried at 100 and afterwards fixed during 30 seconds at a temperature of 210. The dyed material is rinsed with Water, soaped and dried. Under these conditions is obtained a deeply coloured bluish-red dyeing having fastness to rubbing, light and sublimation.

The dyestufic's described in the other examples produce, with application of this process, dyeing of equal quality.

Example 132 A mixture consisting of 1 g. of the dyestutf obtained according to Example 1 and 1 g. of the dyestuif, obtained according to Example 10, are dispersed in 400 g. of Water. To this dispersion are added, as swelling agent, 12 g. of the sodium salt of o-phenylphenol, as well as 12 g. diammonium phosphate, and 100 g. of yarn made from polyethylene glycol terephthalate are dyed for 1 /2 hours at -98". The dyeing is rinsed and afterwards treated with aqueous sodium hydroxide solution and a dispersing agent.

In this manner is obtained a deeply coloured red dyeing having fastness to light and to sublimation.

By replacing, in the above example, the g. of polyethylene glycol terephthalate yarn by 100 g. of cellulose triacetate fabric, dyeing under the given conditions and subsequently rinsing with water, a deeply coloured red dyeing is obtained having very good fastness to Washing and to sublimation.

We claim:

1. An anthraquinone dyestuif of the formula wherein V represents hydroxyl or -NH V represents hydrogen, hydroxyl, NH lower alkylamino, cyclohexylamino, phenylamino, phenoxyphenylamino, phenylazophenylamino or phenylamino ring-substituted by chlorine, lower alkyl or lower alkoxy, X is oxygen or sulfur, Y is C C -alkylene or -CH7CHCH9- W is hydrogen, chlorine or X-phenyleneSO NHY-O-OO-OR and R is C C -alky1, C C -alkyl substituted by chlorine or bromine, phenyl or phenyl substituted by C C -alkyl, chlorine or bromine.

2. A dyestuff as claimed in claim 1 wherein W is hydrogen or chlorine.

3. A dyestuff as claimed in claim 1 of the formula 0 0 NH l I O- SOrNH-CHICH2O- OCgHg-B1 l o-Qsornn-cnicni-o-d-oclm-nr 4. A dyestuff as claimed in claim 1 of the formula References Cited FOREIGN PATENTS 24,909 10/1969 Japan 260372 LORRAINE A. WEINBERGER, Primary Examiner E. J. SKELLY, Assistant Examiner US. Cl. X.R. 260-207, 207.1, 373 

